package com.itheima.reggie.controller;

import cn.hutool.core.io.IoUtil;
import com.itheima.reggie.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {


    @Value("${reggie.path}")
    private String basePath;


    @PostMapping("/upload")
    public R update(MultipartFile file){
        //修改文件的名字
        String filename = file.getOriginalFilename();
        String s = filename.substring(filename.lastIndexOf('.'));
        String name = UUID.randomUUID().toString();
        filename=name+s;

        //创建一个目录对象
        File file1 = new File(basePath);
        if(!file1.exists()){
            file1.mkdirs();
        }

        //上传文件
        try {
            file.transferTo(new File(basePath+filename));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.success(filename);

    }


    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws Exception {
        FileInputStream fis = new FileInputStream(basePath + name);
        ServletOutputStream os = response.getOutputStream();
        IoUtil.copy(fis,os);
        fis.close();


    }


}
